反应详情

Trifluoroacetic anhydride (1 ml.) was added to a solution of 7-(2-methoxyimino-3-oxo-4-bromobutyramido)-3-hydroxycepham-4-carboxylic acid (syn isomer, 1 g.) in tetrahydrofuran (3 ml.) and the mixture was treated in a similar manner to that of Example 18 to give 7-(2-methoxyimino-3-oxo-4-bromobutyramido)-3-cephem-4-carboxylic acid (syn isomer, 0.65 g.).

1. additionthe mixture was treated in a similar manner to that of Example 18